Delta 17 series low flow tub

[Chris Wagner]

Hello,

I installed a Delta 17 series cartridge for new bathroom remodel but the flow rate seems low.

I tested using a 5 gallon bucket. Bathroom on second floor. 60PSI at entry to house.

Test cap hot&cold on= 7.5gpm
Test cap hot only =4.35gpm
Test cap cold only= 4.8gpm

Cartridge installed=4.0gpm
New(2nd) cartridge= 4.0gpm


Does this seem normal? 3.5gpm drop with cartridge installed?

 

[hj]

Probably, but even that is more than a shower head is allowed to flow. Even that flow, however, will probably cause a problem because of the PEX between the valve and the diverter spout.

 

[Sponsor]

 

[Chris Wagner]

hj, that is Copper between valve and spout. Im getting 7.5gpm out the tub without cartridge. And 4gpm with cartridge. I had read 17 series cartridge was rate for 6.98gpm for tub.

Delta wasnt really helpful, he said it might be cause I used a brass drop ear on tub and I might have flow out showerhead cause of that. But I dont. And I swear I read on here a drop elbow for tub spout was fine

 

[Chris Wagner]

Any other thoughts I was planning on closing the walls this weekend., Thanks

 

[Chris Wagner]

Is the different flow between hot and cold only a problem?

 

[Terry]

The 1/2" copper with drop ear is fine. There is no reduction with that.
I normall see the highest flow from the tub spout on the center mix of hot and cold.
All cold or all hot never puts out as much.

 

[Chris Wagner]

ok terry, does 4gpm seem low for a tub spout?